import java.util.Timer;
import java.util.concurrent.atomic.AtomicInteger;

public class Demo38 {
    //先定义一个静态的成员变量
    private static AtomicInteger count = new AtomicInteger(0);
    public static void main(String[] args) throws InterruptedException {
        Thread t1 = new Thread(() -> {
            for (int i = 0; i < 50000; i++) {
                count.getAndIncrement();  //相当于count++
            }
        });

        Thread t2 = new Thread(() ->{
            for (int i = 0; i < 50000; i++) {
                count.getAndIncrement();
            }
        });
       t1.start();
       t2.start();
       t1.join();
       t2.join();
        System.out.println("count=" +count);
    }
}
